Merge to MachineInstrInfo.h

llvm-svn: 4402

llvm/include/llvm/Target/MInstructionInfo.h

@@ -1,85 +0,0 @@
-//===- Target/MInstructionInfo.h - Target Instruction Information -*-C++-*-===//
-//
-// MInstruction's are completely generic instructions that provide very little
-// interpretation upon their arguments and sementics.  This file defines an
-// interface that should be used to get information about the semantics of the
-// actual instructions.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CODEGEN_MINSTRUCTIONINFO_H
-#define LLVM_CODEGEN_MINSTRUCTIONINFO_H
-
-#include <assert.h>
-#include <iosfwd>
-class MInstruction;
-class MRegisterInfo;
-
-/// MInstructionDesc - This record contains all of the information known about a
-/// particular instruction.  Note that several instructions with the same
-/// mnemonic may be represented in the target machine as different instructions.
-///
-struct MInstructionDesc {
-  const char *Name;     // Assembly language mnemonic for the instruction.
-  unsigned   Flags;    // Flags identifying inst properties (defined below)
-  unsigned TSFlags;    // Target Specific Flags
-};
-
-/// MIF namespace - This namespace contains flags that pertain to machine
-/// instructions
-///
-namespace MIF {
-  enum {
-    // Memory flags...
-    LOAD               = 1 << 0,   // This instruction loads from memory
-    STORE              = 1 << 1,   // This instruction stores to memory
-
-    // Control flow flags...
-    CALL               = 1 << 2,   // This instruction calls another function
-    RET                = 1 << 3,   // This instruction returns from function
-    BRANCH             = 1 << 4,   // This instruction is a branch
-  };
-};
-
-/// MInstructionInfo base class - We assume that the target defines a static
-/// array of MInstructionDesc objects that represent all of the machine
-/// instructions that the target has.  As such, we simply have to track a
-/// pointer to this array so that we can turn an instruction opcode into an
-/// instruction descriptor.
-///
-class MInstructionInfo {
-  const MInstructionDesc *Desc;    // Pointer to the descriptor array
-  unsigned NumInstructions;        // Number of entries in the array
-protected:
-  MInstructionInfo(const MInstructionDesc *D, unsigned NI)
-    : Desc(D), NumInstructions(NI) {}
-public:
-
-  enum {                           // Target independant constants
-    PHIOpcode = 0,                 /// Opcode for PHI instruction
-    NoOpOpcode = 1,                /// Opcode for noop instruction
-  };
-
-  /// getRegisterInfo - MInstructionInfo is a superset of MRegister info.  As
-  /// such, whenever a client has an instance of instruction info, it should
-  /// always be able to get register info as well (through this method).
-  ///
-  virtual const MRegisterInfo &getRegisterInfo() const = 0;
-
-  const MInstructionDesc &operator[](unsigned Opcode) const {
-    assert(Opcode < NumInstructions &&
-           "Attempting to access record for invalid opcode!");
-    return Desc[Opcode];
-  }
-
-  /// Provide a get method, equivalent to [], but more useful if we have a
-  /// pointer to this object.
-  const MInstructionDesc &get(unsigned Opcode) const {
-    return operator[](Opcode);
-  }
-
-  virtual void print(const MInstruction *MI, std::ostream &O) const = 0;
-
-};
-
-#endif